1O54

Crystal structure of SAM-dependent O-methyltransferase (TM0748) from Thermotoga maritima at 1.65 A resolution

• PDB DOI: https://doi.org/10.2210/pdb1O54/pdb

• Classification: TRANSFERASE
• Organism(s): Thermotoga maritima
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-08-13 Released: 2003-08-19 
• Deposition Author(s): Joint Center for Structural Genomics (JCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free: 0.188 
• R-Value Work: 0.158 
• R-Value Observed: 0.159 

Starting Model: experimental

Literature

Crystal structure of SAM-dependent O-methyltransferase (TM0748) from Thermotoga maritima at 1.65 A resolution

Joint Center for Structural Genomics (JCSG)

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 31.61 kDa 
• Atom Count: 2,408 
• Modelled Residue Count: 265 
• Deposited Residue Count: 277 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SAM-dependent O-methyltransferase	A	277	Thermotoga maritima	Mutation(s): 0  Gene Names: TM0748 EC: 2.1.1 (PDB Primary Data), 2.1.1.220 (UniProt)
UniProt
Find proteins for Q9WZK7 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)) Explore Q9WZK7  Go to UniProtKB:  Q9WZK7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free: 0.188 
• R-Value Work: 0.158 
• R-Value Observed: 0.159 
• Space Group: I 2 2 2
• Diffraction Data: https://doi.org/10.18430/M31O54

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.253	α = 90
b = 74.992	β = 90
c = 143.701	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-08-19 
Deposition Author(s): Joint Center for Structural Genomics (JCSG)

Revision History  

• Version 1.0: 2003-08-19
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.3: 2018-07-18
  Changes: Data collection, Database references
• Version 1.4: 2023-01-25
  Changes: Database references, Derived calculations
• Version 1.5: 2023-09-20
  Changes: Data collection, Refinement description